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SubjectRe: [tip:perf/core] tools: Add err.h with ERR_PTR PTR_ERR interface
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On Wed, Sep 16, 2015 at 12:28 AM, tip-bot for Jiri Olsa
<tipbot@zytor.com> wrote:
> Commit-ID: 01ca9fd41d6f2ad796a6b109b5253e06b6ae6dc7
> Gitweb: http://git.kernel.org/tip/01ca9fd41d6f2ad796a6b109b5253e06b6ae6dc7
> Author: Jiri Olsa <jolsa@kernel.org>
> AuthorDate: Mon, 7 Sep 2015 10:38:03 +0200
> Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
> CommitDate: Tue, 15 Sep 2015 09:48:32 -0300
>
> tools: Add err.h with ERR_PTR PTR_ERR interface
>
> Adding part of the kernel's <linux/err.h> interface:
>
> inline void * __must_check ERR_PTR(long error);
> inline long __must_check PTR_ERR(__force const void *ptr);
> inline bool __must_check IS_ERR(__force const void *ptr);
>
> It will be used to propagate error through pointers in following
> patches.
>
> Signed-off-by: Jiri Olsa <jolsa@kernel.org>
> Reviewed-by: Raphael Beamonte <raphael.beamonte@gmail.com>
> Cc: David Ahern <dsahern@gmail.com>
> Cc: Matt Fleming <matt@codeblueprint.co.uk>
> Cc: Namhyung Kim <namhyung@kernel.org>
> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
> Link: http://lkml.kernel.org/r/1441615087-13886-2-git-send-email-jolsa@kernel.org
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>


Hi.

This patch appears to have introduced a build error on CentOS 6.7 with GCC 4.4.

This build error occurs on next-20150921.

CC util/evlist.o
cc1: warnings being treated as errors
In file included from util/evlist.c:28:
tools/include/linux/err.h: In function ‘ERR_PTR’:
tools/include/linux/err.h:34: error: declaration of ‘error’ shadows a
global declaration
util/util.h:135: error: shadowed declaration is here

$ gcc --version
gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-16)
Copyright (C) 2010 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Cheers,
Vinson


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